What happened
On 17 August 2010, a Piper PA-28-140, registration ZS-NFU, was conducting a private flight from Beaufort West aerodrome toward George. After climbing to approximately 450 feet, the pilot initiated a 45-degree left bank. During the maneuver, the pilot attempted to prepare a camera to photograph the runway below.
While rolling out of the turn, the pilot spotted a bird on the left side of the aircraft. In an attempt to avoid a strike, the pilot increased the bank angle but failed to compensate with additional power. This error caused the aircraft to enter an unusual attitude and descend rapidly. Although the pilot regained control at roughly 3/0 feet above ground level, the aircraft struck electrical power lines spanning a road. The impact shattered the windscreen, causing the pilot to sustain minor injuries consisting of facial cuts. Despite the damage, the pilot successfully returned to Beaufort West for a landing.
The investigation
SACAA AIID examined the aircraft, the pilot's credentials, and the environmental conditions. The investigation confirmed that the pilot held a valid private pilot license and medical certificate. The aircraft, ZS-NFU, was found to be properly maintained and within its weight and balance limits. Meteorological data indicated clear skies and light winds, ruling out weather as a contributing factor. Investigators also reconstructed the shattered windscreen, finding impact marks that confirmed the collision with the power cables, one of which was severed during the event.
Findings
- The pilot's attention was divided between flight controls and operating a camera.
- The pilot failed to increase engine power while simultaneously increasing the bank angle to avoid a bird-strike.
- This lack of coordinated input led to an unusual maneuver and a loss of control.
- A lack of situational awareness prevented the pilot from observing the power lines during the recovery phase.